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6. Call Services

When you are speaking during a call, keep the microphone about 2.5 cm to 5 cm away from your mouth. This

ensures optimal voice quality on the receiving radio.

In trunking mode, if the radio is not registered or attached, or an empty group is selected, you cannot

initiate a call.

6.1 Group Call

A group call is a call from an individual user in a group to all the other members in the group.

In trunking mode, with the Auto Select Available Site feature preprogrammed by your dealer, the radio

automatically registers with an unrestricted BS for successful call establishment when making a call to the

restricted group.

6.1.1 Initiating a Group Call

Through Preset Contact

Press and then rotate the Smart Knob to select the digital channel or group contact, and then press and hold the

PTT key.

Through Contact List

 Conventional Mode

a. Press the preprogrammed Contact List or Favorite Contact List key, or go to Menu > Contact >

Contact/Favorite.

b. Select the group contact.

c. Press and hold the PTT key.

 Trunking Mode

 Press the Back/Subgroup key or the preprogrammed Current Subgroup Contact key, select the

subgroup and group contact, and then press the P1/Answer key or the PTT key.

 Press the preprogrammed Contact List key, or go to Menu > Contact > Favorite, select the group

contact, and then press the P1/Answer key or the PTT key.

Through Manual Dialing

Hytera HP78X User Manual

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